Heavy metal and metallothionein concentrations in seabirds from the Pacific coast of Canada
Heavy metal and metallothionein concentrations in seabirds from the Pacific coast of Canada
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DOI：
10.1016/s0025-326x(97)00034-9
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发表时间：
1997-10
影响因子：
5.8
通讯作者：
J. Elliott;A. Scheuhammer
中科院分区：
文献类型：
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作者：
J. Elliott;A. Scheuhammer
对1990年繁殖季节从加拿大太平洋沿岸栖息地收集的海鸟组织进行了镉、汞、铅和其他19种微量元素的分析。金属硫蛋白（Mt）在三个物种的肾脏进行了测量。范围内的基本微量金属浓度一般都很窄，这些元素在海鸟组织中的稳态控制一致。肾脏中镉浓度始终高于肝脏。在夏洛特女王群岛的希帕岛上，食草的Leach's storm-petrel（Oceanodroma leucorhoa）的肾脏中镉的平均浓度最高（306±78 μg g g− 1干重）。镉浓度在肾脏的利奇的风暴海燕和犀牛海雀（Cerorhinca monocerata）显着更大的北方殖民地相比，那些进一步南部。镉和MT浓度在三个物种的肾脏中呈正相关，其中进行了测量[犀牛海雀，卡辛海雀（Ptychoramphus aleuticus）和古代海雀（Synthliboramphus antiquus）]，总体r = 0.82，p < 0.001。汞的累积量不足以引起5个物种中任何一个物种的毒理学关注。温哥华岛西海岸克莱兰岛的利奇海燕肝脏中的汞平均浓度最高（6.37微克/克），明显高于更北的希帕岛鸟类。肝脏汞和硒的浓度没有相关的三个物种（犀牛海雀，卡辛的海雀和古海雀），硒的测量。骨骼中的铅浓度始终最高，叉尾海燕（Oceanodroma furcata）的平均浓度最高（6.2 μg g− 1干重）。
Seabird tissues, collected during the 1990 breeding season from colonies on the Pacific coast of Canada, were analysed for Cd, Hg, Pb and 19 other trace elements. Metallothionein (Mt) was measured in kidneys of three species. Ranges of essential trace metal concentrations were generally narrow, consistent with homeostatic control of these elements in seabird tissues. Cadmium concentrations were always higher in kidney than in liver. Highest mean Cd concentrations (306±78 μg g−1dry wt) were in kidneys of planktivorous Leach's storm-petrels (Oceanodroma leucorhoa) from Hippa Island in the Queen Charlotte archipelago. Cadmium concentrations in kidneys of both Leach's storm-petrels and rhinoceros auklets (Cerorhinca monocerata) were significantly greater at northern colonies compared to those further south. Cadmium and Mt concentrations were positively correlated in kidneys across the three species for which measurements were made [rhinoceros auklet, Cassin's auklet (Ptychoramphus aleuticus), and ancient murrelet (Synthliboramphus antiquus)] with an overall r = 0.82, p < 0.001. Mercury accumulation was not sufficiently great to be of toxicological concern in any of the 5 species. Highest mean Hg concentrations (6.37 μg g−1) were in livers of Leach's storm-petrels from Cleland Island on the west coast of Vancouver Island, and were significantly greater than in birds from further north on Hippa Island. Concentrations of hepatic Hg and Se were not correlated in the three species (rhinoceros auklet, Cassin's auklet and ancient murrelet) for which Se was measured. Lead concentrations were consistently greatest in bone, with highest mean concentrations in fork-tailed storm-petrels (Oceanodroma furcata) (6.2 μg g−1dry wt).